Anomen would have benefited greatly if random comments took into account his knighthood / alignment change. But even after the change he still speaks down to beggars and such.
Yes, Anomen's potential transformation to CN always felt a bit half-arsed to me. I've often wondered if it was a late addition once the Haer'Dalis romance was descoped, to try to make him more compatible with a variety of female PCs, but have never seen this discussed anywhere.